Valve.



G. B McCRACKEN.

VALVE.

APPLICATION FILED OCT. 8, I917.

Patented Nov. 19, 1918.

WITNESSES:

minim-wham- GEDBGE B. MCCEACKEN, OF NILLIMANTIG, CONNECTICUT.

VALVE Application filed Cictobcr 8 1917.

1/?) /Z l /10m 2'; may concern:

Be it known that I, Gnonen B. Mic-CRACK RX a citizen of the United States. residing at Williniantic. in the county of Windham and State 01 Connecticut. have invented a new and Improved Valve. of which the following is a specification.

My invention relates more especially to that class of valves in which the valve plungel is mounted at the end of a rotatable spindle and is. hv means of screw threads caused to be moved t ward and away 31 its seat. and an object of mv invention,

among othersis to provide a *alve having,

means tor nn'iintainin its emcicncv for long periods o't' time and one that shall particularlv free from liabilitv to leak.

One form of device embodying nrv inven tion. and in the construction and use of which the objects herein out, as well as others. niav be attained, is illustrated in the accompanving drawings. in which:

Figure 1 is a view in central longitudinal xection through a valve cmhodving" my in vention.

Fig: 2 a view in cross section thrcmgh the same on plane denoted hv dotted line 2- 2 of Fig. 1.

Fin 1; is a detail view in central longitudinal section through the gland-nut ln the accompanying drawings the nuineral 5 denotes the valve hodv having the usual valve chamhcr 6 with an inlet opening thereto and an outlet opening therefrom, and T denotes the'valve scat against which the valve head 9 adapted to be pressed to prevent llow of fluid through the opening 9.

in the use of valves of this class the meetin; tact-s of the valve head and alve seat soon heroine worn and then it becomes necessary to true them up in order to make them tight A common practice in truing up these faces is to rotate the valve head against the seat. and while the, methods heretofore practised and the means heretofore employed have involved great trouble and labor I have provided means in my improved valve whereby this grinding open ation may he readilyperformed and with. little trouble.

To this end I provide an interiorl v threaded feeding leeve 10 projecting within the neck 11 of the valve bodv. said sleeve 7 having a flange 12 seated upon the end of said neck. A valve spindle sleeve 13 provided With an fiKtBIlOl thread t fit that Eloeahleotlon or? letters IPatentl Patented Nova 19, LWEL'So Serial No. 195,344.

upon the sleeve 10. and a valve stem or spindle 14: extends through the sleeve 13 and supports the valve head 8 at its lower end. The sleeve 13 abuts with its end against the valve head 8, and a packing chamber 15 is formed in the sleeve 13 intinediatelv back of said head 8 to prevent flow of tluid past the head and between the stem 14 and the interior wall of the, sleeve 13. A cap- 16 is formed to engage the flange 1'2 and the screw threaded neck 11 to s cure the sleeve 10 in place. A gland not. it secured to the outer screw threaded end of the sleeve 10 and this nut has a gland 18 integral with it and closelv encircling the sleeve 1 vided with teeth 19 or ratchet form so that when the nut 17 is turned in one. direction to secure the parts in place and press the gland upon the packing .20. the teeth will ride over the packing but when the nut is turned in the opposite direction to release the parts the teeth will catch into the packing and thus will rousrhen and loosen it and eventually raise it from its place so that the removal of the nut will automatically remove the packing and thus avoid much trouble that has heretofore existed in efforts to remove the packing after a nut and scp arate gland have been displaced.

A hand wheel 21 is secured to the screw threaded end of the sleeve 13 and the two are caused to rotate together as by means of a kev 22. screw threaded end or the spindle or stel'n ll; a washer 21- hcing located between the nutand a shoulder at the base of the threaded end "25 of the stem. The thickness of the huh of the wheel is such that when the nut 23 is tightly set there will be little friction between the washer and the hub of the wheel. this 't'rictioual contact being suiticicut to cause'thc spindle ll and sleeve 13 to'turn together as the wheel 21 is turned, but insutlicien to prevent separate turning ltlUVtllltllt ot the spindle 14 upon the application oi su'thcient powc to the nut 23. A plug 27' its an opening 28 through the body or" the valve opposite the valve seat this openinr being provided for the purpose of introducing an abrasive material to the valve seat when it is desired to grind such seat. a

In the operation of the device the plug 2'? being removed and abrasive material being applied to the valve seat, the Wheel 3. The edge of this gland is pro- A nut 23 is secured to the 

